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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Agent	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
2	Sales Consultant	Georg Pipps	Germany	1 2 3 4 5
3	Accounting Manager	Howard Snyder	Brazil	1 2 3 4 5
4	Sales Representative	Pascale Cartrain	Spain	1 2 3 4 5
5	Owner	Howard Snyder	USA	1 2 3 4 5
6	Sales Associate	Jaime Yorres	Austria	1 2 3 4 5
7	Accountant	Elizabeth Lincoln	USA	1 2 3 4 5
8	Sales Agent	Georg Pipps	Spain	1 2 3 4 5
9	Sales Agent	Patricio Simpson	France	1 2 3 4 5
10	Sales Agent	Pascale Cartrain	Bulgaria	1 2 3 4 5
11	Sales Representative	Patricio Simpson	Bulgaria	1 2 3 4 5
12	Accountant	Jaime Yorres	Spain	1 2 3 4 5
13	Sales Consultant	Patricio Simpson	USA	1 2 3 4 5
14	Sales Representative	Paul Henriot	England	1 2 3 4 5
15	Marketing Assistant	Jaime Yorres	Brazil	1 2 3 4 5
16	Accounting Manager	Jaime Yorres	Spain	1 2 3 4 5
17	Owner	Hanna Moos	Spain	1 2 3 4 5
18	Sales Consultant	Patricio Simpson	Austria	1 2 3 4 5
19	Sales Representative	Hanna Moos	USA	1 2 3 4 5
20	Sales Representative	Matti Karttunen	England	1 2 3 4 5
21	Sales Manager	Antonio Moreno	Brazil	1 2 3 4 5
22	Sales Agent	Patricio Simpson	Italy	1 2 3 4 5
23	Marketing Manager	Howard Snyder	Austria	1 2 3 4 5
24	Accounting Manager	Howard Snyder	Bulgaria	1 2 3 4 5
25	Sales Manager	Jaime Yorres	Spain	1 2 3 4 5
26	Marketing Assistant	Jaime Yorres	USA	1 2 3 4 5
27	Accountant	Elizabeth Lincoln	Italy	1 2 3 4 5
28	Accounting Manager	Howard Snyder	Italy	1 2 3 4 5
29	Sales Representative	Pascale Cartrain	Austria	1 2 3 4 5
30	Marketing Assistant	Howard Snyder	Austria	1 2 3 4 5
31	Accountant	Patricio Simpson	Bulgaria	1 2 3 4 5
32	Accounting Manager	Matti Karttunen	Brazil	1 2 3 4 5
33	Accounting Manager	Paul Henriot	Austria	1 2 3 4 5
34	Sales Agent	Antonio Moreno	Germany	1 2 3 4 5
35	Marketing Manager	Antonio Moreno	Brazil	1 2 3 4 5
36	Sales Consultant	Matti Karttunen	Spain	1 2 3 4 5
37	Sales Agent	Hanna Moos	Spain	1 2 3 4 5
38	Sales Associate	Howard Snyder	England	1 2 3 4 5
39	Sales Associate	Patricio Simpson	France	1 2 3 4 5
40	Sales Associate	Jaime Yorres	Brazil	1 2 3 4 5
41	Sales Manager	Jaime Yorres	Austria	1 2 3 4 5
42	Marketing Manager	Paul Henriot	Spain	1 2 3 4 5
43	Sales Manager	Paul Henriot	Austria	1 2 3 4 5
44	Accountant	Howard Snyder	USA	1 2 3 4 5
45	Sales Consultant	Georg Pipps	Austria	1 2 3 4 5
46	Sales Manager	Elizabeth Lincoln	Argentina	1 2 3 4 5
47	Marketing Assistant	Paul Henriot	USA	1 2 3 4 5
48	Marketing Manager	Antonio Moreno	Spain	1 2 3 4 5
49	Accounting Manager	Matti Karttunen	Brazil	1 2 3 4 5
50	Accountant	Paul Henriot	Argentina	1 2 3 4 5
51	Sales Associate	Jaime Yorres	Argentina	1 2 3 4 5
52	Sales Manager	Hanna Moos	Italy	1 2 3 4 5
53	Accounting Manager	Hanna Moos	Argentina	1 2 3 4 5
54	Marketing Assistant	Pascale Cartrain	Austria	1 2 3 4 5
55	Sales Consultant	Matti Karttunen	England	1 2 3 4 5
56	Sales Representative	Georg Pipps	Germany	1 2 3 4 5
57	Sales Manager	Georg Pipps	Austria	1 2 3 4 5
58	Owner	Paul Henriot	Argentina	1 2 3 4 5
59	Accounting Manager	Matti Karttunen	Germany	1 2 3 4 5
60	Sales Manager	Elizabeth Lincoln	Brazil	1 2 3 4 5
61	Sales Representative	Elizabeth Lincoln	France	1 2 3 4 5
62	Owner	Hanna Moos	Germany	1 2 3 4 5
63	Accountant	Patricio Simpson	Spain	1 2 3 4 5
64	Sales Associate	Antonio Moreno	Austria	1 2 3 4 5
65	Sales Associate	Jaime Yorres	Argentina	1 2 3 4 5
66	Accountant	Howard Snyder	Brazil	1 2 3 4 5
67	Marketing Assistant	Paul Henriot	Bulgaria	1 2 3 4 5
68	Marketing Assistant	Howard Snyder	France	1 2 3 4 5
69	Sales Manager	Georg Pipps	Brazil	1 2 3 4 5
70	Sales Agent	Antonio Moreno	Austria	1 2 3 4 5
71	Sales Manager	Antonio Moreno	Germany	1 2 3 4 5
72	Sales Representative	Hanna Moos	Spain	1 2 3 4 5
73	Owner	Matti Karttunen	Germany	1 2 3 4 5
74	Owner	Georg Pipps	Spain	1 2 3 4 5
75	Marketing Manager	Jaime Yorres	Italy	1 2 3 4 5
76	Marketing Manager	Matti Karttunen	Italy	1 2 3 4 5
77	Sales Consultant	Jaime Yorres	Austria	1 2 3 4 5
78	Marketing Manager	Antonio Moreno	Italy	1 2 3 4 5
79	Sales Associate	Jaime Yorres	Italy	1 2 3 4 5
80	Sales Consultant	Howard Snyder	Bulgaria	1 2 3 4 5
81	Owner	Jaime Yorres	Austria	1 2 3 4 5
82	Marketing Assistant	Matti Karttunen	Argentina	1 2 3 4 5
83	Sales Representative	Jaime Yorres	France	1 2 3 4 5
84	Marketing Assistant	Elizabeth Lincoln	Germany	1 2 3 4 5
85	Sales Agent	Paul Henriot	France	1 2 3 4 5
86	Sales Consultant	Patricio Simpson	Argentina	1 2 3 4 5
87	Marketing Manager	Georg Pipps	Brazil	1 2 3 4 5
88	Marketing Manager	Howard Snyder	Spain	1 2 3 4 5
89	Marketing Assistant	Elizabeth Lincoln	France	1 2 3 4 5
90	Accountant	Patricio Simpson	USA	1 2 3 4 5
91	Marketing Manager	Paul Henriot	England	1 2 3 4 5
92	Accountant	Antonio Moreno	Italy	1 2 3 4 5
93	Sales Consultant	Elizabeth Lincoln	Argentina	1 2 3 4 5
94	Accountant	Matti Karttunen	France	1 2 3 4 5
95	Accountant	Jaime Yorres	Germany	1 2 3 4 5
96	Marketing Assistant	Elizabeth Lincoln	Spain	1 2 3 4 5
97	Sales Agent	Georg Pipps	Spain	1 2 3 4 5
98	Owner	Matti Karttunen	France	1 2 3 4 5
99	Sales Agent	Antonio Moreno	USA	1 2 3 4 5
100	Owner	Elizabeth Lincoln	Spain	1 2 3 4 5


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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